Spring Loaded Pen Holder
thingiverse
A spring loaded pen holder that mounts in aluminum extrusion. The spring makes up for uneven surfaces and the pen takes an easier ride. Made specifically for paper mate flair pens. Design files are Alibre type. Instructions Print out parts Fine tune the part that slides into the extrusion with a file or sandpaper as it was designed for a tight fit. The spring is from a ball point pen and the hardware is M3. The longer screw is about 40mm the shorter one about 15mm. Mount to the extrusion first then insert pen for a friction fit. It stays firm with a surprising amount of resistance.
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